A new heterogeneous catalyst of triple superphosphate/titanium tetrachloride is used for the synthesis of 1,8-dioxooctahydroxanthenes and tetrahydrobenzo[b]pyrans

•Various analytical techniques were used to characterize the modification of TSP with TiCl4.•Efficient synthesis of tetrahydrobenzo[b]pyrans and 1,8-dioxooctahydroxanthenes derivatives.•Reusable catalyst for at least for 5 runs.•The reactions were performed under mild and green conditions. We have s...

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Bibliographic Details
Published in:Journal of molecular structure 2023-12, Vol.1294, p.136554, Article 136554
Main Authors: Merroun, Youssef, Chehab, Soukaina, Hallaoui, Achraf El, Guedira, Taoufiq, Boukhris, Said, Souizi, Abdelaziz, Ghailane, Rachida
Format: Article
Language:English
Subjects:
1,8-dioxooctahydroxanthene
Green protocol
Heterogeneous catalyst
Tetrahydrobenzo[b]pyran
TiP2O7
TSP
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Summary:•Various analytical techniques were used to characterize the modification of TSP with TiCl4.•Efficient synthesis of tetrahydrobenzo[b]pyrans and 1,8-dioxooctahydroxanthenes derivatives.•Reusable catalyst for at least for 5 runs.•The reactions were performed under mild and green conditions. We have synthesized titanium phosphate (TiCl4/TSP) using a simple impregnation method and characterized by FT-IR, XRD, SEM, and EDX techniques. The catalytic activity of the catalyst was explored in the synthesis of tetrahydrobenzo[b]pyrans and 1,8-dioxooctahydroxanthenes derivatives under environmentally friendly conditions. The products were synthesized in excellent yields (90–97%) within 5–15 min. The catalyst is stable for up to five consecutive cycles without a significant loss of catalytic reactivity.
ISSN:0022-2860
1872-8014
DOI:10.1016/j.molstruc.2023.136554